1 files changed, 66 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/cursize.c b/reference/C/CONTRIB/SNIP/cursize.c
new file mode 100755
index 0000000..18d8172
--- /dev/null
+++ b/reference/C/CONTRIB/SNIP/cursize.c
@@ -0,0 +1,66 @@
+/*
+**  Program to set the size of the cursor
+**
+**  Public domain demonstration by Bob Jarvis
+*/
+
+#include <stdio.h>      /* puts()              */
+#include <dos.h>        /* int86(), union REGS */
+#include <stdlib.h>     /* exit(), atoi()      */
+
+char *help =  "CURSIZE - sets the cursor size.\n"
+              "Usage:\n"
+              "   CURSIZE <top-line> <bottom-line>\n"
+              "where\n"
+              "   top-line = top line of cursor within character cell\n"
+              "   bottom-line = bottom line\n"
+              "Example:\n"
+              "   CURSIZE 7 8     <set cursor to bottom 2 lines of VGA>\n"
+              "   CURSIZE 32 32   <turns cursor off>";
+
+void cursor_size(int top_line, int bottom_line)
+{
+      union REGS regs;
+
+      regs.h.ah = 1;
+      regs.h.ch = (unsigned char)top_line;
+      regs.h.cl = (unsigned char)bottom_line;
+
+      int86(0x10,&regs,&regs);
+}
+
+void get_cursor_size(int *top_line, int *bottom_line)
+{
+      union REGS regs;
+
+      regs.h.ah = 3;
+      regs.h.bh = 0;
+      int86(0x10, &regs, &regs);
+
+      *top_line = regs.h.ch;
+      *bottom_line = regs.h.cl;
+
+      return;
+}
+
+void main(int argc, char *argv[])
+{
+      int top, bottom;
+
+      if(argc < 3)
+      {
+            puts(help);
+            exit(1);
+      }
+
+      top = atoi(argv[1]);
+      bottom = atoi(argv[2]);
+
+      cursor_size(top,bottom);
+
+      top = bottom = -1;
+
+      get_cursor_size(&top, &bottom);
+
+      printf("top = %d  bottom = %d\n", top, bottom);
+}